County Maps

Map of Illinois showing counties that have been mapped.

County mapping is carried out at the ISGS under a variety of programs. The programs exist for different purposes and require different levels of scientific review. Maps are published in specific Series based on the program under which they were created and the corresponding level of review. The links on this page access all downloadable county-scale maps except Coal, Oil, and Gas, which are maintained separately. Please use the Coal Maps and Oil and Gas Maps links to access those maps.

The ISGS Library page provides links to catalogs of ISGS maps and publications.

Boone
Bureau
Carroll
Cook
Henry
Jo Daviess
Kane
Lake
Lee
Madison
McHenry
McLean
Monroe
Rock Island
St. Clair
Tazewell
Whiteside
Williamson
Winnebago

Jo Daviess County Boone Winnebago Counties Boone Winnebago Counties Lake County Carroll County Lee County Kane County Cook County Tazewell County McLean County Madison County McHenry County Williamson County Bureau County Henry County Whiteside County Rock Island County St. Clair County Monroe County

Updated 07/16/2012 SLD

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